72316635503 has 32 divisors (see below), whose sum is σ = 85354368000. Its totient is φ = 59984499456.

The previous prime is 72316635499. The next prime is 72316635569. The reversal of 72316635503 is 30553661327.

It is a happy number.

It is not a de Polignac number, because 72316635503 - 2² = 72316635499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72316635803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19686875 + ... + 19690547.

It is an arithmetic number, because the mean of its divisors is an integer number (2667324000).

Almost surely, 2^72316635503 is an apocalyptic number.

72316635503 is a deficient number, since it is larger than the sum of its proper divisors (13037732497).

72316635503 is a wasteful number, since it uses less digits than its factorization.

72316635503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4311.

The product of its (nonzero) digits is 340200, while the sum is 41.

The spelling of 72316635503 in words is "seventy-two billion, three hundred sixteen million, six hundred thirty-five thousand, five hundred three".